Good day hglazunov,
I too am in the seafood industry focusing on frozen products, but mostly shrimp. I am interested in your GDST system you have. I would love to hear more about it. My plant is pretty small and all of our work is done on paper, so that makes the transition from paper docs to a "sortable spreadsheet" more difficult. From my understanding, the steps to approach FSMA 204 is to 1) identify the CTE's that apply to you, 2) list out which KDE's you already track, and 3) begin to format a traceability plan. Some further steps that I think area valuable to do are to draft a letter that addresses the requirements for your persons up and down the supply chain. Our biggest worry is regarding the shrimp shed that unload the vessels since they are considered "first land-based receivers." I asked for some advice regarding FSMA 204, and got similar responses to this page, but someone did attach some good links:
Link for Traceability plan template
Link for Supply Chain Written Agreement (to ask suppliers to sign off and agree that they will help comply with FSMA204
Link for Supply Chain Partner Notification Letter (This would let your downstream partners know you did not perform the killstep, but someone else will)
Link for Traceability Worksheets in PDF and Docx format (These help you figure out if you already keep track of KDEs and where you're getting them from)
Link for FDA Official CTE & KDE guide.
Let me know if you have more questions, FSMA is a topic I would like to discuss more since it seems everyone is sort of confused on the topic.
Best,
Shrimper